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8f74b95a21
As per the emailed RFC in https://edk2.groups.io/g/devel/topic/rfc_move/107675828, this patch moves CompilerIntrinsicsLib from ArmPkg to MdePkg as this library provides compiler intrinsics, which are industry standard. This aligns with the goal of integrating ArmPkg into existing packages: https://bugzilla.tianocore.org/show_bug.cgi?id=4121. The newly placed CompilerIntrinsicsLib is added to MdeLibs.dsc.inc as every DSC that builds ARM/AARCH64 needs this library added. The old location is removed from every DSC in edk2 in this commit also to not break bisectability with minimal hoop jumping. Continuous-integration-options: PatchCheck.ignore-multi-package Signed-off-by: Oliver Smith-Denny <osde@linux.microsoft.com>
42 lines
893 B
ArmAsm
42 lines
893 B
ArmAsm
#------------------------------------------------------------------------------
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#
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# Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
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#
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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#
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#------------------------------------------------------------------------------
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#include <AsmMacroLib.h>
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ASM_FUNC(__ctzsi2)
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uxth r3, r0
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cmp r3, #0
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moveq ip, #16
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movne ip, #0
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@ lr needed for prologue
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mov r0, r0, lsr ip
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tst r0, #255
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movne r3, #0
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moveq r3, #8
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mov r0, r0, lsr r3
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tst r0, #15
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movne r1, #0
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moveq r1, #4
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add r3, r3, ip
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mov r0, r0, lsr r1
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tst r0, #3
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movne r2, #0
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moveq r2, #2
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add r3, r3, r1
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mov r0, r0, lsr r2
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and r0, r0, #3
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add r2, r3, r2
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eor r3, r0, #1
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mov r0, r0, lsr #1
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ands r3, r3, #1
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mvnne r3, #0
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rsb r0, r0, #2
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and r0, r3, r0
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add r0, r2, r0
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bx lr
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